Fan



FIG. 1 is a rear and right side perspective view of a fan showing my new design;

FIG. 2 is a front and left side perspective view thereof;

FIG. 3 is a front elevation view thereof, shown enlarged in scale;

FIG. 4 is a rear elevation view thereof, shown enlarged in scale;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines depict portions of the fan that form no part of the claimed design. 

CLAIM The ornamental design for a fan, as shown and described. 